21.7Lines means those conductors together with their supporting poles or
structures and appurtenances which are located outside of buildings.

A.Conflicting Lines (lines in
conflict or conflicts) mean lines so situated with respect to each other (
except at crossings) that the overturning of one line will result in contact of
its poles or conductors with the poles or conductors of the second line, assuming
no conductors are broken in either line; except that line on opposite sides of
a thoroughfare are not considered as conflicting if separated by a distance not
less than 60 per cent the height of the higher pole line above the ground line
and in no case less than 20 feet ( see App. G, Fig. 1).

B.Colinear
Lines mean:

Conflicting lines so situated
that one line is wholly or partly over the other line, often called “overbuild’

Conflicting lines not
“overbuilds” but not separated a horizontal distance of less than the required
pin spacing of the highest voltage circuit involved

Conflicting lines not
“overbuilds” but separated a horizontal distance of less than one foot,
regardless of pine spacings.(See App.
G, Figs. 2 and 3.)

Note-For the purpose of measurement, the horizontal
distance between the conflicting lines shall be that distance measured
horizontally between vertical planes passing through the adjacent extremities
of the conflicting lines.

C.Tower Lines (Class E, H, L and T)
mean supply lines, the supporting structures of which are of steel or other
metal and have a maximum outside dimension of more than 4 feet measured either
along or across the line in a horizontal plane at the ground level.Metal supporting structures, “A” frames or
“H” structures, having a dimension from outside of one support to outside of
another support greater than 4 feet at the ground level will be classified as
towers.

Guyed V-type or Y-type-metal
structures will be classified as towers.

Note-Metal structures having
maximum outside dimensions of 4 feet or less, measured along and cross the line
in a horizontal plane at the ground level, will be classified as poles under
supply lines.

D.
Overhead Line Structures are the
poles, towers, or structures located outside of buildings and which support
circuits and their related conductors and equipment.

Strikeout and Underline Version

Rule 21.7

21.7Lines means those conductors together with their supporting poles or
structures and appurtenances which are located outside of buildings.

A.Conflicting Lines (lines in
conflict or conflicts) mean lines so situated with respect to each other (
except at crossings) that the overturning of one line will result in contact of
its poles or conductors with the poles or conductors of the second line, assuming
no conductors are broken in either line; except that line on opposite sides of
a thoroughfare are not considered as conflicting if separated by a distance not
less than 60 per cent the height of the higher pole line above the ground line
and in no case less than 20 feet ( see App. G, Fig. 1).

B.Colinear
Lines mean:

Conflicting lines so situated
that one line is wholly or partly over the other line, often called “overbuild’

Conflicting lines not
“overbuilds” but not separated a horizontal distance of less than the required
pin spacing of the highest voltage circuit involved

Conflicting lines not
“overbuilds” but separated a horizontal distance of less than one foot,
regardless of pine spacings.(See App.
G, Figs. 2 and 3.)

Note-For the purpose of measurement, the horizontal
distance between the conflicting lines shall be that distance measured
horizontally between vertical planes passing through the adjacent extremities
of the conflicting lines.

C.Tower Lines (Class E, H, L and T)
mean supply lines, the supporting structures of which are of steel or other
metal and have a maximum outside dimension of more than 4 feet measured either
along or across the line in a horizontal plane at the ground level.Metal supporting structures, “A” frames or
“H” structures, having a dimension from outside of one support to outside of
another support greater than 4 feet at the ground level will be classified as
towers.

Guyed V-type or Y-type-metal
structures will be classified as towers.

Note-Metal structures having
maximum outside dimensions of 4 feet or less, measured along and cross the line
in a horizontal plane at the ground level, will be classified as poles under
supply lines.

D.
Overhead Line Structures are the
poles, towers, or structures located outside of buildings and which support
circuits and their related conductors and equipment.

Lead Wires mean those conductors which are
sometimes termed “jumpers”, “bridle wires”, “transposition wires”, or “taps”
and which are used on an overhead line structure for connecting the line
conductors on the same overhead line structure.

Final Version

Rule 21.7

21.7
Lead Wires mean those conductors which
are sometimes termed “jumpers”, “bridle wires”, “transposition wires”, or
“taps” and which are used on an overhead line structure for connecting the line
conductors on the same overhead line structure.